Featured Research

from universities, journals, and other organizations

Engineers Build Window Onto Formation Of Atomic Layers; Device Could Improve Manufacturing Efficiency And Quality

Date:
February 26, 1998
Source:
University Of Michigan
Summary:
University of Michigan engineers have built a device that, for the first time, allows them to watch how ultra-thin layers of "sputter deposited" atoms form on surfaces during growth of coatings.

ANN ARBOR---University of Michigan engineers have built a device that, for the first time, allows them to watch how ultra-thin layers of "sputter deposited" atoms form on surfaces during growth of coatings.

Related Articles


John Bilello and Steven Yalisove, researchers in the Department of Materials Science and Engineering, built the instrument to help them observe the process of sputtering---a method of "spray painting" films of atoms onto another surface. Sputtering is a common way of coating materials to make them stronger and more impervious to corrosion, friction, wear and temperature. While the technique is used in applications ranging from microelectronics to protecting jet engine turbine blades from high temperature erosion, it was never before possible to monitor the process as it happened.

In 1995, Bilello and Yalisove were the first researchers to use sputtering to make "pin-stripe" coatings, patterns of alternating thick and thin nanolayers that dramatically improved material strength and toughness. These so-called multiscalar microstructures are now receiving increasing attention. But the process demands precision, which is hard to achieve, and, at least in the past, impossible to verify until after the layering is complete.

Their latest advance, however, which bounces non-interactive high intensity X-rays off the atoms being deposited, now allows them to see sputtering deposition---how the layers of atoms arrange themselves on a surface---in real time. "Nobody has ever been able to measure the characteristics of the film while it's going on---until now," said Prof. Bilello.

Observing the process of deposition, they said, could enable scientists to make changes during sputtering to maximize all the functional properties of a material they are coating, including stress and strain. Bilello and Yalisove designed their device for their work in "sputter plasmas"---bombarding argon ions into solid materials targets to vaporize them---a method they liken to "atomic sand blasting."

This process creates a high energy plasma which coats other metals, ceramics and polymers. Eventually, said Prof. Yalisove, the in-situ X-ray characterization technique will be widely available. "As X-ray sources get smaller, and advanced detectors improve in efficiency, we think everyone will need systems similar to our design to help improve manufacturing throughput and quality control," he said.

Funding for the research came from the U.S. Army Research Office and the Defense Advanced Research Projects Agency.


Story Source:

The above story is based on materials provided by University Of Michigan. Note: Materials may be edited for content and length.


Cite This Page:

University Of Michigan. "Engineers Build Window Onto Formation Of Atomic Layers; Device Could Improve Manufacturing Efficiency And Quality." ScienceDaily. ScienceDaily, 26 February 1998. <www.sciencedaily.com/releases/1998/02/980226074928.htm>.
University Of Michigan. (1998, February 26). Engineers Build Window Onto Formation Of Atomic Layers; Device Could Improve Manufacturing Efficiency And Quality. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/1998/02/980226074928.htm
University Of Michigan. "Engineers Build Window Onto Formation Of Atomic Layers; Device Could Improve Manufacturing Efficiency And Quality." ScienceDaily. www.sciencedaily.com/releases/1998/02/980226074928.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Building Google Into Cars

Building Google Into Cars

Reuters - Business Video Online (Dec. 19, 2014) Google's next Android version could become the standard that'll power your vehicle's entertainment and navigation features, Reuters has learned. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
AP Review: Nikon D750 and GoPro Hero 4

AP Review: Nikon D750 and GoPro Hero 4

AP (Dec. 19, 2014) What to buy an experienced photographer or video shooter? There is some strong gear on the market from Nikon and GoPro. The AP's Ron Harris takes a closer look. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins